eG Monitoring
 

Measures reported by ClariionSPTest

A storage area network (SAN) is a specialized high speed network that connects computer systems, or host servers to high performance storage subsystems. The SAN components include

  • host bus adapters (HBAs) in the host servers,
  • switches that help route storage traffic,
  • cables,
  • storage processors (SPs),
  • and storage disk arrays.

    • The storage processor enables the administrator in serving the purpose of the following:
  • creating raid Group
  • Binding Luns
  • All CLI commands can be executed
  • Read/Write operations from external server to SAN

    • This test monitors the current state and I/O activity on each of the storage processors supported by the storage system.

     The measures made by this test are as follows:

    Measurement Description Measurement Unit Interpretation
    State Indicates the current state of this sorage processor.   A storage processor can be in the On or in the Off state.

    The numeric values that correspond to the aforesaid states are as follows:

    Numeric Value State
    0 Off
    1 On

    Note:

    By default, this measure reports the above-mentioned values while indicating the status of a storage processor. The graph of this measure however, represents the processor status using the numeric equivalents - 0 or 1.
    Busy Indicates percent utilization of the storage processor. Percent The numeric value that corresponds to individual states are listed below.
    • 90%-Critical
    • 80%-Major
    • 60%-Minor
    Idle Indicates the percentage of time for which this storage processor was idle. Percent This value varies with respect to the value of the Busy measure.
    Read_requests Indicates the rate of read requests to this storage processor. Reqs/Sec Comparing the value of these measures across storage processors will clearly indicate which processor is overloaded - it could also shed light on irregularities in load balancing across the processors.
    Write_requests Indicates the rate of write requests to this storage processor. Reqs/Sec
    Total_io Indicates the sum of read and write request rates. I/O/Sec  
    Data_reads Indicates the rate at which data is written via this storage processor. Blocks/Sec  
    Data_writes Indicates the rate at which data is read via this storage processor. Blocks/Sec